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Kiyoumars Roushangar
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Journal Articles

Kernel-based framework for improved prediction of discharge coefficient in vertically supported cylindrical weirs

Kiyoumars Roushangar, Amir Mehrizad
Journal of Hydroinformatics (2024) 26 (8): 1883–1905.
DOI: https://doi.org/10.2166/hydro.2024.039
Date Online: 05 August 2024
View articletitled, Kernel-based framework for improved prediction of discharge coefficient in vertically supported cylindrical weirs View PDF for article titled, Kernel-based framework for improved prediction of discharge coefficient in vertically supported cylindrical weirs
Journal Articles

Novel application of robust GWO-KELM model in predicting discharge coefficient of radial gates: a field data-based analysis

Kiyoumars Roushangar, Arman Alirezazadeh Sadaghiani, Saman Shahnazi
Journal of Hydroinformatics (2023) 25 (2): 275–299.
DOI: https://doi.org/10.2166/hydro.2023.096
Date Online: 03 February 2023
View articletitled, Novel application of robust GWO-KELM model in predicting discharge coefficient of radial gates: a field data-based analysis View PDF for article titled, Novel application of robust GWO-KELM model in predicting discharge coefficient of radial gates: a field data-based analysis
Journal Articles

The effect of triangular prismatic elements on the hydraulic performance of stepped spillways in the skimming flow regime: an experimental study and numerical modeling

Kiyoumars Roushangar, Samira Akhgar, Saman Shahnazi
Journal of Hydroinformatics (2022) 24 (2): 243–258.
DOI: https://doi.org/10.2166/hydro.2022.031
Date Online: 08 February 2022
FIGURES | View All (16)
View articletitled, The effect of triangular prismatic elements on the hydraulic performance of stepped spillways in the skimming flow regime: an experimental study and numerical modeling View PDF for article titled, The effect of triangular prismatic elements on the hydraulic performance of stepped spillways in the skimming flow regime: an experimental study and numerical modeling
Journal Articles

Insights into the prediction capability of roughness coefficient in current ripple bedforms under varied hydraulic conditions

Kiyoumars Roushangar, Saman Shahnazi
Journal of Hydroinformatics (2021) 23 (6): 1182–1196.
DOI: https://doi.org/10.2166/hydro.2021.161
Date Online: 18 August 2021
FIGURES | View All (9)
View articletitled, Insights into the prediction capability of roughness coefficient in current ripple bedforms under varied hydraulic conditions View PDF for article titled, Insights into the prediction capability of roughness coefficient in current ripple bedforms under varied hydraulic conditions
Journal Articles

Towards design of compound channels with minimum overall cost through grey wolf optimization algorithm

Kiyoumars Roushangar, Aida Nouri, Saman Shahnazi, Hazi Md Azamathulla
Journal of Hydroinformatics (2021) 23 (5): 985–999.
DOI: https://doi.org/10.2166/hydro.2021.050
Date Online: 19 July 2021
FIGURES | View All (8)
View articletitled, Towards design of compound channels with minimum overall cost through grey wolf optimization algorithm View PDF for article titled, Towards design of compound channels with minimum overall cost through grey wolf optimization algorithm
Journal Articles

The potential of ensemble WT-EEMD-kernel extreme learning machine techniques for prediction suspended sediment concentration in successive points of a river

Kiyoumars Roushangar, Nasrin Aghajani, Roghayeh Ghasempour, Farhad Alizadeh
Journal of Hydroinformatics (2021) 23 (3): 655–670.
DOI: https://doi.org/10.2166/hydro.2021.146
Date Online: 22 February 2021
FIGURES | View All (10)
View articletitled, The potential of ensemble WT-EEMD-kernel extreme learning machine techniques for prediction suspended sediment concentration in successive points of a river View PDF for article titled, The potential of ensemble WT-EEMD-kernel extreme learning machine techniques for prediction suspended sediment concentration in successive points of a river
Journal Articles

The potential of integrated hybrid pre-post-processing techniques for short- to long-term drought forecasting

Kiyoumars Roushangar, Roghayeh Ghasempour, Vahid Nourani
Journal of Hydroinformatics (2021) 23 (1): 117–135.
DOI: https://doi.org/10.2166/hydro.2020.088
Date Online: 09 December 2020
FIGURES | View All (8)
View articletitled, The potential of integrated hybrid pre-post-processing techniques for short- to long-term drought forecasting View PDF for article titled, The potential of integrated hybrid pre-post-processing techniques for short- to long-term drought forecasting
Journal Articles

Modeling total resistance and form resistance of movable bed channels via experimental data and a kernel-based approach

Seyed Mahdi Saghebian, Kiyoumars Roushangar, V. S. Ozgur Kirca, Roghayeh Ghasempour
Journal of Hydroinformatics (2020) 22 (3): 528–540.
DOI: https://doi.org/10.2166/hydro.2020.094
Date Online: 17 February 2020
FIGURES | View All (7)
View articletitled, Modeling total resistance and form resistance of movable bed channels via experimental data and a kernel-based approach View PDF for article titled, Modeling total resistance and form resistance of movable bed channels via experimental data and a kernel-based approach
Journal Articles

Prediction of sediment transport rates in gravel-bed rivers using Gaussian process regression

Kiyoumars Roushangar, Saman Shahnazi
Journal of Hydroinformatics (2020) 22 (2): 249–262.
DOI: https://doi.org/10.2166/hydro.2019.077
Date Online: 25 October 2019
FIGURES
View articletitled, Prediction of sediment transport rates in gravel-bed rivers using Gaussian process regression View PDF for article titled, Prediction of sediment transport rates in gravel-bed rivers using Gaussian process regression
Journal Articles

Evaluation of the effective parameters on energy losses of rectangular and circular culverts via kernel-based approaches

Kiyoumars Roushangar, Ghazaleh Nasssaji Matin, Roghayeh Ghasempour, Seyed Mahdi Saghebian
Journal of Hydroinformatics (2019) 21 (6): 1014–1029.
DOI: https://doi.org/10.2166/hydro.2019.221
Date Online: 11 October 2019
FIGURES | View All (7)
View articletitled, Evaluation of the effective parameters on energy losses of rectangular and circular culverts via kernel-based approaches View PDF for article titled, Evaluation of the effective parameters on energy losses of rectangular and circular culverts via kernel-based approaches
Journal Articles

Using multi-temporal analysis to classify monthly precipitation based on maximal overlap discrete wavelet transform

Kiyoumars Roushangar, Farhad Alizadeh
Journal of Hydroinformatics (2019) 21 (4): 541–557.
DOI: https://doi.org/10.2166/hydro.2019.021
Date Online: 10 May 2019
FIGURES | View All (10)
View articletitled, Using multi-temporal analysis to classify monthly precipitation based on maximal overlap discrete wavelet transform View PDF for article titled, Using multi-temporal analysis to classify monthly precipitation based on maximal overlap discrete wavelet transform
Journal Articles

Influential parameters on submerged discharge capacity of converging ogee spillways based on experimental study and machine learning-based modeling

Kiyoumars Roushangar, Ali Foroudi, Mojtaba Saneie
Journal of Hydroinformatics (2019) 21 (3): 474–492.
DOI: https://doi.org/10.2166/hydro.2019.120
Date Online: 13 February 2019
FIGURES | View All (9)
View articletitled, Influential parameters on submerged discharge capacity of converging ogee spillways based on experimental study and machine learning-based modeling View PDF for article titled, Influential parameters on submerged discharge capacity of converging ogee spillways based on experimental study and machine learning-based modeling
Journal Articles

Evaluation of the impact of channel geometry and rough elements arrangement in hydraulic jump energy dissipation via SVM

Kiyoumars Roushangar, Roghayeh Ghasempour
Journal of Hydroinformatics (2019) 21 (1): 92–103.
DOI: https://doi.org/10.2166/hydro.2018.028
Date Online: 26 November 2018
FIGURES | View All (10)
View articletitled, Evaluation of the impact of channel geometry and rough elements arrangement in hydraulic jump energy dissipation via SVM View PDF for article titled, Evaluation of the impact of channel geometry and rough elements arrangement in hydraulic jump energy dissipation via SVM
Journal Articles

Scenario-based prediction of short-term river stage–discharge process using wavelet-EEMD-based relevance vector machine

Kiyoumars Roushangar, Farhad Alizadeh
Journal of Hydroinformatics (2019) 21 (1): 56–76.
DOI: https://doi.org/10.2166/hydro.2018.023
Date Online: 23 November 2018
FIGURES | View All (9)
View articletitled, Scenario-based prediction of short-term river stage–discharge process using wavelet-EEMD-based relevance vector machine View PDF for article titled, Scenario-based prediction of short-term river stage–discharge process using wavelet-EEMD-based relevance vector machine
Journal Articles

Entropy-based analysis and regionalization of annual precipitation variation in Iran during 1960–2010 using ensemble empirical mode decomposition

Kiyoumars Roushangar, Farhad Alizadeh
Journal of Hydroinformatics (2018) 20 (2): 468–485.
DOI: https://doi.org/10.2166/hydro.2018.037
Date Online: 29 January 2018
FIGURES | View All (10)
View articletitled, Entropy-based analysis and regionalization of annual precipitation variation in Iran during 1960–2010 using ensemble empirical mode decomposition View PDF for article titled, Entropy-based analysis and regionalization of annual precipitation variation in Iran during 1960–2010 using ensemble empirical mode decomposition
Journal Articles

Modeling open channel flow resistance with dune bedform via heuristic and nonlinear approaches

Kiyoumars Roushangar, Mohammad Taghi Alami, Seyed Mahdi Saghebian
Journal of Hydroinformatics (2018) 20 (2): 356–375.
DOI: https://doi.org/10.2166/hydro.2018.020
Date Online: 24 January 2018
FIGURES | View All (10)
View articletitled, Modeling open channel flow resistance with dune bedform via heuristic and nonlinear approaches View PDF for article titled, Modeling open channel flow resistance with dune bedform via heuristic and nonlinear approaches
Journal Articles

Improving capability of conceptual modeling of watershed rainfall–runoff using hybrid wavelet-extreme learning machine approach

Kiyoumars Roushangar, Farhad Alizadeh, Vahid Nourani
Journal of Hydroinformatics (2018) 20 (1): 69–87.
DOI: https://doi.org/10.2166/hydro.2017.011
Date Online: 02 November 2017
FIGURES | View All (10)
View articletitled, Improving capability of conceptual modeling of watershed rainfall–runoff using hybrid wavelet-extreme learning machine approach View PDF for article titled, Improving capability of conceptual modeling of watershed rainfall–runoff using hybrid wavelet-extreme learning machine approach
Journal Articles

A cost model with several hydraulic constraints for optimizing in practice a trapezoidal cross section

Kiyoumars Roushangar, Mohammad Taghi Alami, Vahid Nourani, Aida Nouri
Journal of Hydroinformatics (2017) 19 (3): 456–468.
DOI: https://doi.org/10.2166/hydro.2017.081
Date Online: 06 March 2017
View articletitled, A cost model with several hydraulic constraints for optimizing in practice a trapezoidal cross section View PDF for article titled, A cost model with several hydraulic constraints for optimizing in practice a trapezoidal cross section
Journal Articles

Modeling scour depth downstream of grade-control structures using data driven and empirical approaches

Kiyoumars Roushangar, Samira Akhgar, Ali Erfan, Jalal Shiri
Journal of Hydroinformatics (2016) 18 (6): 946–960.
DOI: https://doi.org/10.2166/hydro.2016.242
Date Online: 15 July 2016
View articletitled, Modeling scour depth downstream of grade-control structures using data driven and empirical approaches View PDF for article titled, Modeling scour depth downstream of grade-control structures using data driven and empirical approaches
Journal Articles

Studying of flow model and bed load transport in a coarse bed river: case study – Aland River, Iran

Kiyoumars Roushangar, Yousef Hassanzadeh, Mohammad Ali Keynejad, Mohammad Tagi Alami, Vahid Nourani ...
Journal of Hydroinformatics (2011) 13 (4): 850–866.
DOI: https://doi.org/10.2166/hydro.2010.010
Date Online: 17 December 2010
View articletitled, Studying of flow model and bed load transport in a coarse bed river: case study – Aland River, Iran View PDF for article titled, Studying of flow model and bed load transport in a coarse bed river: case study – Aland River, Iran